Process of making tubes.



J. G. MOOMY.

PROCESS OF MAKING TUBES.

APPLICATION FILED JUNE 1. 1911.

Patented A11 6, 1918 I JOSEPH e. MOOMY, or ERIE, rENNs LvAnIa; Y

- rnocnss or MAKING TUBES.

Specification of ietters Iiatent. Patented Aug. 6, 1918.

Application filed June 1, 1917. Serial No. 172.323.

To all whom it may concern:

Be it known that I, JOSEPH G. MOOMY, a citizen of the United States,residing at Erie, in the county of Erie and State of Pennsylvania, haveinvented new and useful Improvements in Processes of Making.

Tubes, of which the following is a specification.

This invention relates to the process of making tubes and consists incertain improvements therein as will be hereinafter fully described andpointed out in the claims. 7

In'the making of tubes such as the inner tubes of pneumatic tires it iscommon to form a tube of raw'stock on the poleand thento wrap .a stripof canvas spirally on the tube soformed the canvas holding the materialin place during vulcanization. It has been common practicenfter thevulcani- .zation of a tube to removethe wrapping. re-

winding it on some pole or intermediate means and then utilize thecanvas again for wrapping a tube. In'the present invention thisintermediate step is removed and the.

pull necessary to separate the wrapping from the vulcanized tube isutilized in wrapping a tube of raw to vulcanization.

In carrying out the invention a machine as follows may be used, themachine being illustrated in the accompanying drawings wherein' Figurel'shows a plan view-of the machine. v I

Fig. 2 a side elevation of the machine, a

part being in section to better show construction.

Fig. 4 a section on the line.44 in Fig. 1. 1 marks the frame of themachine. A head-block 2 is mounted on the frame. This has a spindlebearing 3 in which is arranged a spindle 4. The spindle 4 has a squaredsocket 4 in the end. A tail-piece 5 has the spindle bearing 6. A conesupport 7 is carried by the shaft 8', the shaft 8 being journaled in thebearings 6, the bearings being formed with a front and rear part with anopen space between. The shaft 8 is provided with a collar 9 arrangedbetween the front and rear portion of the bearing 6 and a QpringglO ismounted on the shaft 8 and rests-against the rear portion of the bearingand' exerts pressure against the collar-9 to force the cone 7 against apole 11. The pole stock preparatory Fig. 3 a section on the line 33 inFig. 1.

'11 has a squared end 12 which is inserted Into the socket 1* so that itis driven with the spindle 4; In placing the pole in-the machine, theend is placed against the cone 7, the cone forced back against thepressure of the spring 10 and the squared end 12 slipped into the socketi The spindle -.l is driven from a pulley 13. a frictionface 14 whichcooperates with a 'friction member 15. The member 15 is con nected withthe spindle 4 by a spline and groove mechanism and is provided with agrooved hub 16.- A bell crank lever 17 operates in the grooved hub 16.The lever is A link 19 is also connected with the bell crank lever andpivoted at 18 on the frame.

This pulley hasextends to an arm 20 secured to a rock shaft 21 extendingacross the machine near the floor. A long pedal 22 is secured to therock shaft 21. A spring 21 on the end of the rock shaft 21 normallyholds the clutch out o'f action. When the pedal 22 is depressed itthrowsthe clutch members into contact and so drives the pole. Theseparts machines.

A sliding the guide 24 rack. 25 is mounted on the head .23 and a are ofcommon construction. in wrapping head 23 is slidingly mounted in pinion26 operates in the rack. The pinion' is fixed on a shaft 27 carried bythe bearings 27 'and a wheel 28 is fixed on the outer end i of the shaftin convenient position to be By turning the actuated by the operator.

be moved to the wheel 28 the head 23 may with a dove-tail connection. A

right or -left for the purposes hereinafter described. A spindle 29 isjournaled in the bearings 30 carried by the head 23. Thespindle has asocket 31in its end adapted to receive the squared end 12 of the pole11. A friction pulley 32is fixed on the end of' the spindle and a brakeband 33 is anchored on the frame at 33* and extends over this pulley.The end of the band is supplied with a weight 34 so that a certainamount of resistance to rotation is given to the spindle 29. This may beincreased or diminished by the increasing or is diminishing of theweight 34. I

A centering cone35 is mounted on the spindle.36. The spindle 36 isjournaled in the bearings 37. A collar 38 is fixed onthe spindle and aspring 39 arranged on the,

spindle exerting pressure against the collar.

The pole 11 is centered by the cone 35, the cone being pressed backandthe squared socket 31. The bearend may be put into the the slidingtail-piece ings 37 are carried by 40 and this is mounted in the slide 41in cone 7 and spindle 4 and is driven by the spindle 4. A pole 11 withatube 45 which has been vulcanized is placed between the cone 35 and thespindle 23, the squared end of the pole being placed in the socket 31.Theend of the wrapping 46 is pulled loose from the vulcanized tube andstarted on the pole with the raw tube. The clutch is then thrown intoengagement by depressing the pedal 22 and the pole carrying the raw.tube is then rotated. This rotation winds the wrapping 46 on to the rawtube pullin it from the vulcanized tube and the .win ing is repeatedwith the sameoverlap and the same'spiral on the raw-tube as the wrappinghad on the vulcanized tube.

In order to start the wrapping on the raw tube in proper position thevulcanized tube is moved to a position op osite the pole carrying thetube of raw stoc This is accomplished bv moving the head 23 to the rightor Where the wrapping breaks sary to form some overlap and this can beaccomplished by movin the head 23 in a direction to give a slightoverlap of the wrapping at this point.

The fabric is moistened 'to facilitate its removal. The wetting of thefabric not onlv facilitates the separation from the vulc'anized tube butalso fits the fabric for wrapping .on the raw tube so that this wettingaccomplishes the double purpose of separation and preparation forwinding.

Seine tension may be desired from the pulley 32 but by this processthere is 'a local tension which is continuous and very desirable inholding the wrapping in proper relation and tension. Quite aconsiderable pull is required to release the wrapping from thevulcanized stock and this pull gives a peculiar and desirable tensionwhich v is utilized in wrapping the raw tube.

As a result of this process one. step in the operation is entirelyeliminated, that is to say, the unwinding of the tube accomplishes thewrapping of the raw tube. The elimination of this step reduces the wearand tear on the wrapping and at the same-time asterial directly from atube allowing the pull incident of the wrapping material to act astension in the winding of the raw left as necessity may. require; t isalso neces-- sures a uniform wrapping under proper tension. I

\Vhat I claim as new is 1. In the making of tubes the wrapping of a rawtube with a wrapping material directly from a tube vulcanized whilewrapped in said wrapping material.

2. In the making of tubes the moistening of the wrapping material on avulcanized tube vulcanized while wrapped in the wrapping material.unwinding said wrapping material so moistened from the vulcanized tubeand winding it directly on a tube of raw stock as it is unwound from thevulcanized tube.

3. In the making of tubes the wrapping of a tube of raw stock spirallywith a strip of wrapping material directly from a tube vulcanizedwhilewrapped in said strip of wrapping material'wound spirally thereon.

4. In the making of tubes the wrapping of a tube of raw stock spirallywith a strip of wrapping material directly from a tube vulcanized whilewrapped in said strip of wrapping material wound spirally thereon. thewrapping progressing on the raw tube as the unwinding progresses on thevulcanized tube. I

5. In the making of tubes the wrapping of a tube of raw stock with awrapping-mavulcanized while wrapped in said wrapping material and to theseparation tube.

. 6. In the making of tubes the placing of" a vulcanized tube with itswrapping 1n spiral form in parallel relation with and opposite to a rawtube to be wrapped. carrying the wrapping from the vulcanized tube tothe raw'tube. and winding the raw tube by rotation as the vulcanizedtube is un-' wound while allowing the pull of the separating of thewrapping from the vulcanized tube to act in tensioning the wrapping onthe raw tube.

7. In the making of rubber tubes the placing of a vulcanized tubewithj'its wrapping moistened in parallel with and opposite a raw tube tobe wrapped, carrying the wrapping from the vulcanized tube to the rawtube, andwinding theraw tube by rotation as the vulcanized tube isunwound while. allowing the pull of the separating ot' the wrapping fromthe vulcanized tube to act in teusioning the wrapping on the raw tube.

In testimony whereof I have hereunto set my hand.

JOSEPH G. MooMY,

